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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>账户账单详情</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
    <style>

        :root {

            --bg-color: #ffffff;

            --text-color: #111827;

            --secondary-text-color: #6b7280;

            --border-color: #e5e7eb;

            --card-bg-color: #ffffff;

            --accent-color: #000000;

            --error-color: #ef4444;

            --success-color: #10b981;

            --info-color: #3b82f6;

            --income-color: #22c55e;

            --expense-color: #ef4444;

            --summary-bar-bg: #f9fafb;

        }

        body {

            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

            margin: 0;

            background-color: var(--summary-bar-bg);

            color: var(--text-color);

            line-height: 1.6;

            -webkit-font-smoothing: antialiased;

            -moz-osx-font-smoothing: grayscale;

        }

        .container {

            max-width: 1200px;

            margin: 0 auto;

            padding: 32px 20px;

        }

        header {

            display: flex;

            justify-content: space-between;

            align-items: center;

            margin-bottom: 16px;

            padding-bottom: 24px;

            border-bottom: 1px solid var(--border-color);

        }

        header h1 {

            margin: 0;

            font-size: 28px;

            color: var(--text-color);

            font-weight: 700;

        }

        .header-actions {

            display: flex;

            align-items: center;

        }

        .header-actions .back-link {

            padding: 8px 16px;

            background-color: var(--bg-color);

            color: var(--secondary-text-color);

            border: 1px solid var(--border-color);

            border-radius: 6px;

            cursor: pointer;

            font-size: 14px;

            font-weight: 500;

            text-decoration: none;

            transition: background-color 0.2s ease, border-color 0.2s ease;

        }

        .header-actions .back-link:hover {

            background-color: #f3f4f6;

            border-color: #d1d5db;

            text-decoration: none;

        }

 

        #account-summary-bar {

            display: grid;

            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));

            gap: 20px;

            background-color: var(--card-bg-color);

            padding: 20px;

            border-radius: 8px;

            margin-bottom: 30px;

            border: 1px solid var(--border-color);

            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);

        }

        .summary-item {

            text-align: left;

        }

        .summary-label {

            display: block;

            font-size: 0.875em;

            color: var(--secondary-text-color);

            margin-bottom: 4px;

            font-weight: 500;

        }

        .summary-value {

            display: block;

            font-size: 1.5em;

            color: var(--text-color);

            font-weight: 600;

        }

 

        .statement-card-item {

            background-color: var(--card-bg-color);

            border-radius: 8px;

            border: 1px solid var(--border-color);

            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);

            margin-bottom: 12px;

            cursor: pointer;

            transition: box-shadow 0.2s ease, transform 0.2s ease;

        }

        .statement-card-item:hover {

            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);

            transform: translateY(-2px);

        }

        .statement-card-item .card-summary {

            padding: 16px 20px;

            display: flex;

            justify-content: space-between;

            align-items: center;

        }

        .statement-card-item .summary-left { display: flex; align-items: center; gap: 12px; }

        .statement-card-item .change-type-icon {

            width: 32px; height: 32px; border-radius: 50%; display: flex;

            align-items: center; justify-content: center; font-weight: 600; color: white;

        }

        .statement-card-item .summary-info .description { font-weight: 500; color: var(--text-color); }

        .statement-card-item .summary-info .timestamp { font-size: 0.875em; color: var(--secondary-text-color); }

        .statement-card-item .summary-right .amount { font-weight: 600; font-size: 1.1em; }

        .statement-card-item .amount.positive { color: var(--income-color); }

        .statement-card-item .amount.negative { color: var(--expense-color); }

        .statement-card-item .amount.neutral { color: var(--text-color); }

        .statement-card-item .card-details {

            padding: 0 20px 16px 20px;

            border-top: 1px solid var(--border-color);

            margin-top: 12px;

            display: none;

        }

        .statement-card-item .details-grid {

            display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));

            gap: 12px 20px; margin-top: 12px;

        }

        .statement-card-item .detail-item { font-size: 0.9em; }

        .statement-card-item .detail-item strong { color: var(--secondary-text-color); font-weight: 500; margin-right: 8px; display: inline-block; min-width: 80px;}

        .statement-card-item .detail-item span { color: var(--text-color); word-break: break-all; }

        .statement-card-item .metadata-title { font-weight: 600; margin-top: 16px; margin-bottom: 8px; font-size: 0.95em; color: var(--text-color); }

        .statement-card-item .metadata-item { font-size: 0.85em; padding-left: 10px; border-left: 2px solid var(--border-color); margin-bottom: 4px; }

        .statement-card-item .metadata-item strong { min-width: 70px; }



        #statements-loading-indicator {

            text-align: center; padding: 40px; font-size: 1em; color: var(--secondary-text-color); display: none; width: 100%;

        }

        #statements-loading-indicator::before {

            content: ''; display: inline-block; width: 24px; height: 24px;

            border: 3px solid rgba(0,0,0, 0.1); border-radius: 50%;

            border-top-color: var(--text-color); animation: spin 0.8s linear infinite;

            margin-right: 12px; position: relative; top: 4px;

        }

        @keyframes spin { to { transform: rotate(360deg); } }

        #pagination-controls {

            margin-top: 20px;

            text-align: center;

        }

        #pagination-controls button {

            padding: 8px 16px;

            margin: 0 5px;

            border: 1px solid var(--border-color);

            background-color: var(--card-bg-color);

            color: var(--text-color);

            border-radius: 6px;

            cursor: pointer;

        }

        #pagination-controls button:disabled {

            opacity: 0.5;

            cursor: not-allowed;

        }

        #pagination-controls button:hover:not(:disabled) {

            border-color: var(--accent-color);

        }

    </style>
</head>
<body>
    <div class="container">
        <header>
            <h1>账户账单详情</h1>
            <div class="header-actions">
                <a href="{{ url_for('dashboard') }}" class="back-link">&larr; 返回仪表盘</a>
            </div>
        </header>
 
        <div id="account-summary-bar">
            <div class="summary-item">
                <span class="summary-label">总收入</span>
                <span class="summary-value" id="summary-total-income">--.-- USD</span>
            </div>
            <div class="summary-item">
                <span class="summary-label">总支出</span>
                <span class="summary-value" id="summary-total-expense">--.-- USD</span>
            </div>
            <div class="summary-item">
                <span class="summary-label">总结余</span>
                <span class="summary-value" id="summary-total-balance">--.-- USD</span>
            </div>
        </div>
        
        <div id="statements-loading-indicator">正在加载账单...</div>
        <div id="statement-records-container">
        </div>
        <div id="pagination-controls">
            <button id="prev-page-btn" disabled>上一页</button>
            <span id="page-info">第 1 页</span>
            <button id="next-page-btn" disabled>下一页</button>
        </div>
    </div>

    <script>

        const accountEmail = "{{ account_email }}"; 

        const recordsContainer = document.getElementById('statement-records-container');

        const loadingIndicator = document.getElementById('statements-loading-indicator');

        const prevPageBtn = document.getElementById('prev-page-btn');

        const nextPageBtn = document.getElementById('next-page-btn');

        const pageInfoElem = document.getElementById('page-info');

 

        const summaryTotalIncomeElem = document.getElementById('summary-total-income');

        const summaryTotalExpenseElem = document.getElementById('summary-total-expense');

        const summaryTotalBalanceElem = document.getElementById('summary-total-balance');

        

        let currentPage = 1;

        const pageSize = 20;

        let totalRecords = 0;

 

        function formatStatementTimestamp(unixTimestamp) {

            if (!unixTimestamp) return 'N/A';

            const date = new Date(unixTimestamp * 1000);

            return date.toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', year: 'numeric', month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit', second: '2-digit', hour12: false });

        }



        function getChangeTypeDetails(type) {

            const types = {

                1: { text: "充值", icon: "➕", color: "#22c55e" }, 2: { text: "提现", icon: "➖", color: "#ef4444" },

                3: { text: "接收", icon: "➡️", color: "#3b82f6" }, 4: { text: "发送", icon: "⬅️", color: "#f97316" },

                5: { text: "消费", icon: "💳", color: "#ef4444" }, 6: { text: "收益", icon: "💰", color: "#10b981" },

                7: { text: "提出", icon: "🔄", color: "#6366f1" }, 8: { text: "开卡", icon: "🚫", color: "#6b7280" },

                14: { text: "红包", icon: "🧧", color: "#f43f5e" }

            };

            return types[type] || { text: `类型 ${type}`, icon: "❓", color: "#6b7280" };

        }

        

        function formatMetadata(metadata) {

            if (typeof metadata !== 'object' || metadata === null || Object.keys(metadata).length === 0) {

                return '<p class="detail-item"><strong>元数据:</strong> <span>无</span></p>';

            }

            let html = '<div class="metadata-title">元数据:</div>';

            for (const key in metadata) {

                html += `<div class="metadata-item"><strong>${key}:</strong> <span>${typeof metadata[key] === 'object' ? JSON.stringify(metadata[key]) : metadata[key]}</span></div>`;

            }

            return html;

        }



        function renderStatementRecords(apiResponse) {

            recordsContainer.innerHTML = ''; 

            loadingIndicator.style.display = 'none';



            if (!apiResponse || !apiResponse.data || !apiResponse.data.items) {

                recordsContainer.innerHTML = '<p>无法加载账单数据或无记录。</p>';

                updatePaginationControls(0);

                return;

            }

            const items = apiResponse.data.items;

            totalRecords = apiResponse.data.total || items.length;



            if (items.length === 0) {

                recordsContainer.innerHTML = '<p>该账户暂无账单记录。</p>';

                updatePaginationControls(0);

                return;

            }

            

            items.forEach(item => {

                const statementItemCard = document.createElement('div');

                statementItemCard.classList.add('statement-card-item');

                const changeTypeDetails = getChangeTypeDetails(item.change_type);

                const amountClass = item.change > 0 ? 'positive' : (item.change < 0 ? 'negative' : 'neutral');

                const formattedAmount = `${item.change >= 0 ? '+' : ''}${parseFloat(item.change).toFixed(item.field === "RED_PACKET_BALANCE" || item.field === "AVAILABLE_BALANCE" ? 5 : 2)}`;



                statementItemCard.innerHTML = `

                    <div class="card-summary">

                        <div class="summary-left">

                            <div class="change-type-icon" style="background-color: ${changeTypeDetails.color};">${changeTypeDetails.icon}</div>

                            <div class="summary-info">

                                <div class="description">${changeTypeDetails.text} - ${item.field === "AVAILABLE_BALANCE" ? "可用余额" : (item.field === "RED_PACKET_BALANCE" ? "红包余额" : item.field)}</div>

                                <div class="timestamp">${formatStatementTimestamp(item.created_at)}</div>

                            </div>

                        </div>

                        <div class="summary-right"><span class="amount ${amountClass}">${formattedAmount}</span></div>

                    </div>

                    <div class="card-details">

                        <div class="details-grid">

                            <p class="detail-item"><strong>ID:</strong> <span>${item.id}</span></p>

                            <p class="detail-item"><strong>交易ID:</strong> <span>${item.tx_id}</span></p>

                            <p class="detail-item"><strong>字段:</strong> <span>${item.field}</span></p>

                            <p class="detail-item"><strong>变动类型:</strong> <span>${changeTypeDetails.text} (${item.change_type})</span></p>

                            <p class="detail-item"><strong>变动额:</strong> <span class="${amountClass}">${formattedAmount}</span></p>

                            <p class="detail-item"><strong>状态:</strong> <span>${item.status === 1 ? '成功' : '处理中/失败'}</span></p>

                            <p class="detail-item"><strong>变动前余额:</strong> <span>${parseFloat(item.pre_balance).toFixed(5)}</span></p>

                            <p class="detail-item"><strong>变动后余额:</strong> <span>${parseFloat(item.balance).toFixed(5)}</span></p>

                        </div>

                        ${formatMetadata(item.metadata)}

                    </div>

                `;

                statementItemCard.querySelector('.card-summary').addEventListener('click', () => {

                    const details = statementItemCard.querySelector('.card-details');

                    details.style.display = details.style.display === 'none' || details.style.display === '' ? 'block' : 'none';

                });

                recordsContainer.appendChild(statementItemCard);

            });

            updatePaginationControls(totalRecords);

        }



        function updatePaginationControls(total) {

            const totalPages = Math.ceil(total / pageSize);

            pageInfoElem.textContent = `第 ${currentPage} / ${totalPages} 页 (共 ${total} 条)`;

            prevPageBtn.disabled = currentPage === 1;

            nextPageBtn.disabled = currentPage === totalPages || totalPages === 0;

        }



        async function fetchStatementsForPage(page) {

            loadingIndicator.style.display = 'block';

            recordsContainer.innerHTML = '';

            try {

                const response = await fetch(`/api/account_statements?email=${encodeURIComponent(accountEmail)}&page=${page}&size=${pageSize}`);

                if (response.status === 401) { window.location.href = '/'; return; }

                if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); }

                

                const statementData = await response.json();

                if (statementData.error) {

                    recordsContainer.innerHTML = `<p style="color: var(--error-color);">获取账单失败: ${statementData.error}</p>`;

                } else {

                    renderStatementRecords(statementData);

                }

            } catch (error) {

                console.error(`Error fetching statements for ${accountEmail} page ${page}:`, error);

                recordsContainer.innerHTML = `<p style="color: var(--error-color);">获取账单时发生网络错误。</p>`;

            }

        }



        prevPageBtn.addEventListener('click', () => {

            if (currentPage > 1) {

                currentPage--;

                fetchStatementsForPage(currentPage);

            }

        });



        nextPageBtn.addEventListener('click', () => {

            const totalPages = Math.ceil(totalRecords / pageSize);

            if (currentPage < totalPages) {

                currentPage++;

                fetchStatementsForPage(currentPage);

            }

        });



        document.addEventListener('DOMContentLoaded', function() {

            if (accountEmail) {

                fetchAccountStatistics();

                fetchStatementsForPage(currentPage);

            } else {

                recordsContainer.innerHTML = "<p>未指定账户信息。</p>";

                loadingIndicator.style.display = 'none';

                summaryTotalIncomeElem.textContent = 'N/A';

                summaryTotalExpenseElem.textContent = 'N/A';

                summaryTotalBalanceElem.textContent = 'N/A';

            }

        });



        async function fetchAccountStatistics() {

            if (!accountEmail) return;



            try {

                const response = await fetch(`/api/account_summary_statistics?email=${encodeURIComponent(accountEmail)}`);

                

                if (response.status === 401) {

                    console.warn('Unauthorized access to statistics API via backend. User might need to log in.');

                    summaryTotalIncomeElem.textContent = '认证失败';

                    summaryTotalExpenseElem.textContent = '认证失败';

                    summaryTotalBalanceElem.textContent = '认证失败';

                    return;

                }

 

                if (!response.ok) {

                    let errorMsg = `HTTP error! status: ${response.status}`;

                    try {

                        const errData = await response.json();

                        errorMsg = errData.error || errData.message || errorMsg;

                    } catch (e) { }

                    throw new Error(errorMsg);

                }

                

                const statsData = await response.json();

 

                if (statsData.error) {

                    console.error('Backend failed to get statistics:', statsData.error);

                    summaryTotalIncomeElem.textContent = '加载失败';

                    summaryTotalExpenseElem.textContent = '加载失败';

                    summaryTotalBalanceElem.textContent = '加载失败';

                } else if (statsData.code === 0 && statsData.data) {

                    summaryTotalIncomeElem.textContent = `${parseFloat(statsData.data.income || 0).toFixed(2)} USD`;

                    summaryTotalExpenseElem.textContent = `${parseFloat(statsData.data.expense || 0).toFixed(2)} USD`;

                    summaryTotalBalanceElem.textContent = `${parseFloat(statsData.data.balance || 0).toFixed(2)} USD`;

                } else {

                    console.error('Received unexpected statistics data structure from backend:', statsData);

                    summaryTotalIncomeElem.textContent = '数据格式错误';

                    summaryTotalExpenseElem.textContent = '数据格式错误';

                    summaryTotalBalanceElem.textContent = '数据格式错误';

                }

            } catch (error) {

                console.error('Error fetching account statistics via backend:', error);

                summaryTotalIncomeElem.textContent = '网络错误';

                summaryTotalExpenseElem.textContent = '网络错误';

                summaryTotalBalanceElem.textContent = '网络错误';

            }

        }

    </script>
</body>
</html>